Iron-albumin-glycerophosphate and process of making same.



Ho Drawing.

onions Ennsr risonnn, or

GRONA'LT, NEAR HJENOVER, GERMANY.

IRON-ALBUMIN-GLYCEROPHQSPHATE AND PROCESS F MAKING SAME.

To all whom it may concern:

Be 1t known that I, Ennsr 'FISCHER, a

subject of the German Emperor, and residing at Gronau, near Hanover, Germany have invented a certain new and useiul i proved Process of Making Iron-Albumin- Glycerophosphate, of which the following is a specification.

The subject-matter of the invention is an improved process of producing iron-albumin preparations.

As is Well-known, organic ironsalts stimulate the formation of blood. It appeared desirable to produce for anaemic persons on aid the formation of new nerve-substance for iron remedy which would simultaneously their injured nerves as glycerophosphoric acid :does andsupply new materialto the weakened tissues as mins. Y

Albumin preparations soluble in Water described. in the United States Letters Patent No. 601,995," Which preparations are made from glycerophosphates, such as sodium glycerophosphate, and albumins. What is looked upon as the special advantage of these compounds, their solubility in water, is not unconditionally advantageous for iron compounds,'as the danger is present is effected by pure albu.

that they prejudicially afi ect the teeth erophosphoric acid was almost completely done away With and an iron-casein poor in glycerophos horic acid resulted. Now when 1 the free aci o the'aqueous solution of the iron salt was neutralized by addingsoda lye until the solution showed itself neutral to the indicator Congo red, and when in addition sodium acetate was added to the -solu-' tion,,it Was' poss1ble to obtain with the same from caseinrsddinmglycerophosplioric firstly as on; intermediary product a casein-iron- Specification of letters Katent.

Patented (lot. 11, Matti.

Application-filed March was. Serial No. sears-i. (Specimens) glyceropliosphate still containing sodium and soluble in water, and when greater quantitles the solution oi the iron saltwere employed a casein-ironglycerophosphate insoluble in Water. V

The intermediary product which is llght brown contained for instance, according to.

analysis Sh lf Q of water, 2.35% of irona11d l/lW/s of phosphorus while the insoluble product which is dark brown contained for instance (3.7% of water and 3.95% of iron with the same quantity of phosphorus above mentioned. Thus in carrying this process into effect intermediary products may be formed, that casein-iron-sodiuni-glycerophosphates which :1 re soluble in water. By adding more iron salts casein-iron-glycero phosphates are formed which are insoluble in Water.

The invention is carried into effect in suhstintiully the following manner: 200 g. of

carein-sodium-glycerophosphate are dissolved in Water and an aqueous solution of 30 g. offerric chloridadded at ordinary temperature aftersuid chlorid solution has been deprived of its acid character by the addition of 185 com. of 1:1 sodium hydrate and 50 of sodium acetate. A. brown precipitate is formed Which is separated by filtration, then it is washed with alcohol and other and tin-ally dried. The resulting prod uct is insoluble in alcohol and water but dissolves easily in the digestive liquids.

I claim:

'l. The process of producing ironalhuminglycei'ophosphatcs from soluble alkali-albumin-glycerophosphate and an iron salt consisting in adding a neutralized solution of an iron salt to-the solution of alkali-albuminglycerophosphate in the presence of sodium acetate.

2. The process of producing iron-albuminglycerophosphates from sodium-albuminglycerophosphate and an iron salt consisting in addinga neutralized solution of ferricchlorid to the solution 01": alkali-albuminglycerophos hate in the presence of sodium acetate untiv all the sodium has been replaced llOIl,-21ll(l separating the resulting oreoipitate from the solution.

. The process of producing iron-albuminglycerophcsphates from sodium-albumin;

glycerophosphate and an iron salt consisting .in adding a. neutralized solution of ferric Ci'll01l(l.-t0, the solution of alkali-albuminglycerophosphate the presence of socliuin' acetate until all the sodium has been replaced by iron, se mrufing the resulting p1- eipiulie from the solnt ion washing same with ulvohol and ether, and drying it.

l. As :1 novel eouipouinl, an iIOD ZllbUIDiIP g1yeeiw phosphnie derived from soluble ulknlimlhuniiinglycei'oplnmphzite and an iron salt in which all the alkali has been replaced by iron, existing in form of a brownish pow- (lel' insoluble in water and organic solvenl's and soluble in diluted acids and alkalies.

As a novel compound, an iron-albuminglycerophosplmte derived from sodium-albuniin-glycemphosphate and an iron salt in which all the sodium has been replaced by iron, existing in form of a brownish powder ineoluble in Waller and organic solvents and soluble in diluted acids and alkalies. In testimony whereof, I affix my signature in the presence of two witnesses.

ERNST FISCHER. \Viinesses AU GUST L. BIRDEE, LUISE KATHER, 

